Polygraph (disambiguation)

A polygraph is a forensic instrument.

Polygraph may also refer to:
 * Polygraph (author), an author who can write on a variety of different subjects
 * Polygraph (duplicating device), a dual pen device that produces a simultaneous copy of an original while it is written in cursive writing
 * Polygraph (film), a 1996 Canadian film
 * Polygraph (mathematics), a mathematical generalisation of a directed graph in mathematics, also called a computad
 * Autopen, an automatic signing instrument
 * A painted reproduction created by the Polygraphic Society in London in the 1700s, by a process also known as "pollaplasiasmos"
 * A 1988 play at the Theatre of Canada by Robert Lepage
 * Polygraph.info, a fact-checking service
 * An alternative term for Multigraph (orthography)